part ofendoderm-derived structuresphincter musclehepatopancreatic ampullasphincter of hepatopancreatic ampullaEMAPA:18663FMA:15077GAID:285MESH:A03.159.183.079.300.900.600NCIT:C13065Oddi's sphincterUBERON:0004915UMLS:C0028872hepatopancreatic ampullary sphinctermuscular valve that controls the flow of digestive juices (bile and pancreatic juice) through the ampulla of Vater into the second part of the duodenum. Relaxed by the hormone Cholecystokinin (CCK) via vasoactive intestinal polypeptide (VIP).[WP].musculus sphincter ampullaemusculus sphincter ampullae hepatopancreaticasphincter of Oddisphincter of ampulla of vateruberongastrointestinal sphincter